template <class InputIterator, class OutputIterator, class Predicate>
OutputIterator remove_copy_if(InputIterator first, InputIterator last,
OutputIterator result, Predicate pred);
Description
Remove_copy_if copies elements from the range [first, last) to a
range beginning at result, except that elements for which pred
is true are not copied. The return
value is the end of the resulting range. This operation is stable,
meaning that the relative order of the elements that are copied is the same
as in the range [first, last).
InputIterator's value type is convertible to Predicate's argument
type.
Preconditions
[first, last) is a valid range.
There is enough space in the output range to store the copied
values. That is, if there are n elements in [first, last)
that do not satisfy pred, then [result, result+n) is
a valid range.
result is not an iterator in the range [first, last).
Complexity
Linear. Exactly last - first applications of pred, and at most
last - first assignments.
Example
Fill a vector with the nonnegative elements of another vector.